Error code: MOZILLA_PKIX_ERROR_OCSP_RESPONSE_FOR_CERT_MISSING Keep getting this error message when trying to access web sites that have always worked before. I had to install an add-in to open these web sites, and others with the same issue, in Edge. Most of them are Microsoft. Here are a few: https://www.microsoft.com/en-us/microsoft-365/business/office-365-administration https://www.microsoft.com/Licensing/servicecenter/default.aspx https://www.microsoft.com/en-us/download/details.aspx?id=45520 The odd thing about the issue is that sometimes it works and the web sites load, then a few minutes later they don't. What changed? Is this a profile issue? Is this something you are working on repairing?